I've got this idea to replace the saw/square switch with a potentiometer to be able to mix the output signals. I originally saw this on the TechnoBox iOS app (https://www.audiorealism.se/store/c5/iOS_Apps.html) and mixing the waveforms makes some really nice timbres.

So I just want to ask here if you think this is possible and what it would take to do it? I can solder and have basic knowledge of electronics, but I don't want to fry my x0xb0x, so hopefully some of you can help me in the right direction! :)